<div class="nav-previous"><?php previous_post_link('%link', '&nbsp;'); ?></div>
<div class="nav-next"><?php next_post_link('%link', '&nbsp;'); ?></div>
<style>
	.nav-previous {
		left: 10px;
		height: 61px;
		width: 38px;
		position: fixed;
		top: 50%;
		margin-top: -30px;
	}
	.nav-previous a{
		-webkit-tap-highlight-color: rgba(255,19,0,0);
		opacity: 0.7;
		z-index: 9999;
		text-indent: -9999px;
		overflow: hidden;
		text-decoration: none;
		height: 61px;
		width: 38px;
		background: transparent url("http://www.taxicafe.com.br/themes.gif") no-repeat left top;
		background-position: left top;
		display:block;
	}
	.nav-next {
		right: 10px;
		height: 61px;
		width: 38px;
		position: fixed;
		top: 50%;
		margin-top: -30px;
		}
	.nav-next a{
		-webkit-tap-highlight-color: rgba(0,0,0,0);
		opacity: 0.7;
		z-index: 9999;
		text-indent: -9999px;
		overflow: hidden;
		text-decoration: none;
		height: 61px;
		width: 38px;
		background: transparent url("http://www.taxicafe.com.br/themes.gif") no-repeat right top;
		display:block;
	}
	
</style>